Welcome to the Forum Sebastiao_Carvalho_V!
Let’s see what we can do to help
That’s an “unknown error detected in printing” according to the error codes posted in Error codes (And what we can do with them)
What’s going on with the print? These things are easier to resolve in context. Looks like you are printing ABS?
What else can you tell us? How long have you had the K1, have any prints worked?
Does the printer do anything abnormal? Is it rooted/reset? What firmware?
Looking forward to seeing what we can do [Sebastiao_Carvalho_V]